Sensitivity of Regular Estimators
Sensitivity of Regular Estimators
复制标题
常规估计器的灵敏度
DOI:
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发表时间:
2018
期刊:
影响因子:
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通讯作者:
Yaroslav Mukhin
中科院分区:
文献类型:
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作者:
Yaroslav Mukhin
This paper studies local asymptotic relationship between two scalar estimates. We define sensitivity of a target estimate to a control estimate to be the directional derivative of the target functional with respect to the gradient direction of the control functional. Sensitivity according to the information metric on the model manifold is the asymptotic covariance of regular efficient estimators. Sensitivity according to a general policy metric on the model manifold can be obtained from influence functions of regular efficient estimators. Policy sensitivity has a local counterfactual interpretation, where the ceteris paribus change to a counterfactual distribution is specified by the combination of a control parameter and a Riemannian metric on the model manifold.